Review on Starrett C604R 4 Tempered Graduations Thickness: Precision Measuring Tool for Accurate Thickness Determination by Josh Flanagan

Get Mitutoyo 182-105 or 107 and you won't be disappointed. This starlet is 2-3 times more expensive and the quality I would say is half that. The stars I received (2 times) had the "laser engraved" numbers completely worn away. Also the edges are not cut exactly and have dirty scratches on the edges. My $9 Mitutoyo looks like a precision medical instrument, it has no imperfections and the markings are clear and permanent. There is mm on the flip, which is also useful with Mitutoyo.